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Northern lights Marquette tonight

Marquette sits at 55° magnetic latitude on Michigan's Upper Peninsula, directly on Lake Superior's south shore. The Kp 4 threshold applies here. Presque Isle Park and the Lake Superior shoreline offer north-facing views over open water with minimal light pollution - among the best accessible dark sky positions in the Great Lakes region. Best season: September to April.

Aurora visibility - Marquette

Unlikely tonight

Kp 1 is well below the Kp 4 threshold needed for aurora to be visible from Marquette.

Current Kp

of 9

Threshold for Marquette: Kp 4 Magnetic latitude: ~55°N Updated: 15 May, 17:59 UTC

↓ Bz — nT Solar wind — km/s Density — p/cm³ ☁ —%

Conditions right now: — Kp + Bz + solar wind + cloud + moon

7-day outlook for Marquette

Today

15 May

Quiet

Tomorrow

16 May

Quiet

Sun

17 May

Quiet

Mon

18 May

Quiet

Tue

19 May

Quiet

Wed

20 May

Quiet

Thu

21 May

Quiet

Based on CME arrival predictions from NASA DONKI. Arrival times ±6 hours.

What Kp is needed here?

Marquette sits at a magnetic latitude of approximately 55°N. The Kp index - a global measure of geomagnetic activity on a scale from 0 (quiet) to 9 (extreme storm), updated every 3 hours - needs to reach Kp 4 before the auroral oval expands far enough south to be visible from here.

At Kp 4, visibility is possible from Marquette but skies need to be clear and dark. Cloud cover and light pollution remain the main obstacles even when Kp is high enough.

Best dark sky sites near Marquette

Light pollution is the biggest obstacle after cloud cover. These sites give you the best dark northern horizon within reach.

Presque Isle Park

A rocky north-facing peninsula that juts into Lake Superior from the north edge of Marquette. The city owns and maintains the park, but the outer shoreline is genuinely dark - the peninsula curves away from the downtown light dome. The broad northern horizon opens over open lake water, and the basalt shoreline gives solid camera positions. Access is year-round via the paved loop road.

Black Rocks at Presque Isle

The dark basalt outcroppings on the north shore of the Presque Isle peninsula. The exposed rock platform faces north over open water with minimal light interference from any direction. This is Marquette's most distinctive aurora photography location - the angular black rock foreground contrasts against the lake and sky. Accessible via the walking path around the peninsula's north end.

Little Presque Isle State Forest Area

About 5 miles north of Marquette along County Road 550, this undeveloped Lake Superior shoreline sits in Bortle 3 conditions with no artificial light sources in the immediate area. The forest road accesses several pull-offs above the lake. Darker than the city park and further from the downtown glow, it's the better choice on nights when you need maximum sky darkness.

Best time to see the northern lights in Marquette

Marquette's aurora season runs from late September through to March, when nights are long enough for truly dark skies. The equinox months, September and March, bring a natural boost in geomagnetic activity, making them statistically the best of the season. Summer months bring too much twilight for aurora to be visible at this latitude.

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Activity peaks around the September and March equinoxes, when Earth's magnetic field geometry is most favourable for coupling with the solar wind. Events during these two windows tend to produce the strongest displays of the year for observers at Marquette's latitude.

April through August brings persistent astronomical twilight that washes out aurora completely. Even strong events (Kp 6+) remain invisible during this period because the sky never gets dark enough.

Other USA aurora forecasts

← USA overview

Duluth

Unlikely

Lake Superior north shore, Hawk Ridge

~55°N mag. lat. Kp 4

Michigan

Unlikely

Upper Peninsula, dark sky on Lake Superior

~55°N mag. lat. Kp 4-5

Minnesota

Unlikely

Boundary Waters, best dark sky in the northern lower 48

~56°N mag. lat. Kp 4-5

Northern Lights USA

USA-wide aurora forecast hub.

Northern Lights Duluth Tonight

Duluth - western Lake Superior dark sky at 55° magnetic latitude.

Northern Lights Michigan UP

Michigan Upper Peninsula aurora guide, from Marquette to the Keweenaw.

Northern Lights Minnesota

Minnesota statewide aurora forecast and viewing locations.

What Is the Kp Index?

What Kp 4 means for aurora visibility at 55° magnetic latitude.

Common questions

Aurora watching from Marquette and the Lake Superior shoreline of Michigan's Upper Peninsula.

Is the Upper Peninsula better than lower Michigan for aurora?

Yes, significantly. The UP sits roughly 2 to 3 degrees of latitude north of lower Michigan, which translates to a meaningfully lower Kp threshold for visible aurora. Marquette at 55° magnetic latitude needs Kp 4, while Detroit at around 52° magnetic latitude typically needs Kp 5 or higher for the same display. The UP also has far less light pollution than the southern part of the state, so the sky background is darker even on the same geomagnetic night.

What Kp is needed for aurora in Marquette?

The threshold from Marquette is Kp 4. The Kp index measures global geomagnetic activity on a scale from 0 (quiet) to 9 (extreme storm), updated every 3 hours. At Kp 4, the auroral oval expands far enough south to bring aurora above the northern horizon at 55° magnetic latitude. Kp 5 and above typically produces overhead activity and stronger color. The darkest spots around Marquette - particularly Little Presque Isle - give slightly better contrast at marginal Kp levels compared to viewing from town.

Can I combine aurora watching with a visit to Pictured Rocks National Lakeshore?

Pictured Rocks is about 45 miles east of Marquette along the Lake Superior shoreline via M-28, roughly a 50-minute drive. The park has minimal light pollution along most of its shoreline. Miners Beach near Munising and the Chapel Rock area both offer north-facing lake views. The combination works well for a multi-day trip - Marquette serves as a practical base with hotels and services, while Pictured Rocks adds a darker, more remote viewing option for dedicated aurora nights.

How often does aurora appear over Marquette?

During active solar periods, the UP typically sees Kp 4 or higher events on roughly 25-35 nights per year. Cloud cover is the main limitation - Lake Superior's weather system produces substantial overcast, especially in fall and early winter. The clearest months near Marquette tend to be late winter and early spring, from February through April, when drier cold air masses dominate. Summer nights are too short for usable darkness at this latitude.

What Kp level is needed to see aurora from Marquette versus Duluth?

Both cities sit at the same approximate magnetic latitude of 55°, so the Kp 4 threshold applies to both. The practical difference is geographic - Marquette projects further into Lake Superior from the east, giving observers a wider open-water horizon to the north and slightly less land-sourced light pollution from the south. On any given storm night, either location is equally valid. The main variable is usually which city has the clearer sky, not which one has the geomagnetic advantage.